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Spriggite: Pb3[(UO2)6O8(OH)2](H2O)x; x ~ 3
Comments: Secondary electron microscope image of spriggite crystals and twins. (AmMin, 89:341). Location: Number 2 workings, Radium Ridge, Northern Flinders Ranges, South Australia. Scale: See Image. © American Mineralogist
Spurrite: Ca5(SiO4)2(CO3) Bredigite: Ca7Mg(SiO4)4
Comments: White veins of bredigite in massive gray spurrite (slabbed specimen). Location: Camphouse, Ardnamurchan, Argyll, Highland, Scotland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Spurrite: Ca5(SiO4)2(CO3)
Comments: Dark to light purple massive spurrite (cut face). Location: South Sister Peak, Tres Hermanas Mountains, Luna County, New Mexico, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Squawcreekite: (Fe+++,Sb+++++,W++++++)O4·(H2O) Tripuhyite: Fe++Sb+++++O4
Comments: Micro red-orange squawcreekite crystals in matrix. The mineral is now considered to be a Zn-bearing variety of Tripuhyite. Location: Squaw Creek Tin Mine, Catron County, New Mexico. Scale: Not Given. © Diederik Visser
Srebrodolskite: Ca2Fe+++2O5 Periclase: MgO
Comments: Black grains of srebrodolskite with white periclase. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm. © Thomas Witzke / Abraxas-Verlag
Srebrodolskite: Ca2Fe+++2O5 Kumtyubeite: Ca5(SiO4)2F2 Wadalite: Ca6Al5Si2O16Cl3 Rondorfite: Ca8Mg(SiO4)4Cl2
Comments: BSE image of kumtyubeite (Kmt) associated with srebrodolskite (Srb), bultfonteinite (Blt), Ca- kydrosilicates, wadalite (Wad), rondorfite (Rndr), and ettringite (dark gray). (AmMin, v94:1361). Location: Rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. Scale: See Image. © American Mineralogist
Srilankite: (Ti,Zr)O2
Comments: Backscatter electron image of srilankite (Sri) - rutile (Rt) - ilmenite (Ilm) composite grain (AmMin, v 89, p 761). Location: Atlantis II Fracture Zone, Southwest Indian Ridge, Southern Indian Ocean. Scale: See Image. © American Mineralogist
Stanfieldite: Ca4(Mg,Fe++,Mn)5(PO4)6
Comments: B&W BSE image of a fragment of stanfieldite in an epoxy grain mount. Location: Brahin Meteorite, Pallasite, Minsk, Belarus (1810). Scale: See Image. © Diederik Visser
Stanleyite: (V++++O)SO4·6(H2O) Patronite: VS4
Comments: Blue crystalline stanleyite on dark patronite. Location: Minas Ragra, Junin, Peru. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Stannite: Cu2FeSnS4 Zinkenite: Pb9Sb22S42
Comments: Acicular crystals of zinkenite perched on a twinned, crystal of stannite. Location: Mina San José, Oruro, Bolivia. Scale: 4 x 2.3 x 1.7 cm. © Fabre Minerals
Stannite: Cu2FeSnS4 Volfsonite: Cu+10Cu++Fe++Fe+++2Sn++++3S16
Comments: Bluish-black octahedron of stannite (also known as volfsonite). Location: Yaogangxian Wolfram mine, Yizhang County, Hunan Province, China. Scale: See Image. © Rruff Database